Die.



Y Patented Aug. l3, I90l. J. B. BLAKESLEE.

DIE.

(Application filed Jan. 13, 1900.)

(No Model.)

In 06min: LAJCA/LLL/ gems Witness,

Mofoum, wmmmm a c.

UNITED STATES PATENT FFICE.

JOHN R. BLAKESLEE, OF GLENVILLE, OHIO, ASSIGNOR TO THE AJAX MANUFACTURING COMPANY, OF CLEVELAND, OHIO.

DIE.

SPECIFICATION forming part of Letters Patent No. 680,219,dated August 13, 1901.

Application filed January 18, 1900 Serial No. 1,286. (No model.)

To ctZZ whom it may concern.-

Be it known that I, JOHN R. BLAKESLEE, a citizen of the United States, and a resident of Glenville, county of Ouyahoga, and State-of Ohio, have invented a new and useful Improvement in Dies, of which the following is 7 description set forth in detail certain mechanism embodying the invention, such disclosed means constituting but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawings, Figure I represents a top plan of my improved die, and Fig. II represents a front elevation of one of the two parts thereof. I

Said die consists of two parts or blocks, usually duplicates, which are each connected with suitable means for reciprocating them in a direction at right angles to the axis of thetube or blank to be upset, whereby the two parts are caused to grip and hold said tube during the upsetting operation. Each die part is provided with a working face a, which is complementary to a face 1) formed in the other part. On each side of each of said faces a and I), rerespectively, are formed contact-surfaces a and b, and contiguous to each such surface is formed a depressed surface a and b", so that each contact-surface is bounded by and located intermediately of a working face and a depressed surface, the working face being a depressed surface. Each contact-surface is located between two depressed surfaces.

When two die-blocks are formed with two sets of working faces, as shown in my abovementioned Letters Patent, a depressed surface is formed and locatedintermediately of the contact-surfaces which areformed intermediately of the two working faces, as shown in the drawings.

By constructing two-part dies as above described it is seen that when the two blocks are caused to approach close and contact their contact-surfaces each such contact-surface is inclosed by an open space 0, formed by the working faces of the die-blocks, and an open space d, formed by the depressed surfaces. Such open spaces on each side of the contacted surfaces permit scale, which frequently becomes located thereon, to be squeezed laterally into one of the said two spaces,thereby being removed and permitting the two blocks to close absolutely and prevent the formation of fins on and permits of the perfect formation of the upset portion of the pipe or blank operated upon.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means covered by any one of the following claims be employed.

I therefore particularly point out and distinctly claim as my invention- 1. A two-part die having oppositelydisposed contact-surfaces bounded upon one side by a depressed surface and upon the other by the edges of the working face of the die, substantially as set forth.

2. A two-part die, each part provided with the complementary portion of the working face of the other, each such portion formed with alining contact surfaces intermediate of said working faces and depressed surfaces formed upon such portion,substantially as set forth.

3. A die for upsetting the ends of tubes,cornprising companion die-blocks having working surfaces formed therein, oppositely-disposed contact-surfaces bordering the meeting edges of the working surfaces,and alinin g depressed surfaces in the face of each block into which the contact'surfaces lead whereby scale from the tubes will bedischarged into the channels formed by the depressions.

Signed by me this 6th day of January, 1900.

JOHN R. BLAKESLEE.

Attest:

E. E. ORowELL, D. T. DAVIES. 

